Is coefficient of drag constant?
For most aerodynamic objects, the drag coefficient has a nearly constant value across a large range of Reynolds numbers. In all of the cases presented on this figure, the density, viscosity, and diameter of the ball are the same. The flow velocity is gradually increased from the left to increase the Reynolds number.
Is drag proportional to velocity?
Like friction, the drag force always opposes the motion of an object. Unlike simple friction, the drag force is proportional to some function of the velocity of the object in that fluid. This functionality is complicated and depends upon the shape of the object, its size, its velocity, and the fluid it is in.
What is the formula for the coefficient of drag?
Frontal Area formula = Height * Width * .84 (Height and Width in feet) Frontal Area formula = (Height/12) * (Width/12) * .84 (Height and Width in inches) CdA formula = Cd * Frontal Area
How does rear spoiler affect coefficient of drag?
Some cars now feature automatically adjustable rear spoilers, so at lower speed the effect on drag is reduced when the benefits of reduced lift are not required. Side mirrors both increase the frontal area of the vehicle and increase the coefficient of drag since they protrude from the side of the vehicle.
How long is the warranty on a Toyota Camry?
BASIC WARRANTY 3 Yr./ 36000 Mi. Body style illustration may not reflect the actual shape of this vehicle. EPA MILEAGE EST. (CTY/HWY) 18/26 mpg FUEL TANK CAPACITY 18.5 gal. DRAG COEFFICIENT .28 Cd. This is the estimated average annual insurance premium being charged in your state.
How does reducing drag affect the top speed of a vehicle?
The reduction of drag in road vehicles has led to increases in the top speed of the vehicle and the vehicle’s fuel efficiency, as well as many other performance characteristics, such as handling and acceleration. The two main factors that impact drag are the frontal area of the vehicle and the drag coefficient.